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Morrison, Katelin M; Meyer, Heidi Kristina; Roberts, Emyr Martyn; Rapp, Hans Tore; Colaço, Ana; Pham, Christopher Kim (2021): Occurence of sponges and associated fauna on the Schultz Bank (Flank) during GO Sars cruise GS2018108 in 2018 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.927269

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Abstract:
In 2014, two experimental Agassiz trawls were conducted on the Schulz Bank; one at the summit (568–670 m depth) and one on the southwestern flank (1,464 m depth). The 3-m-wide Agassiz trawl, with a 1 cm mesh size in the cod-end, was towed along the seafloor for 676 m on the summit and 441 m on the flank, resulting in a disturbed area of 2,028 and 1,323 m², for the summit and flank, respectively. Towing speed was maintained at around 2 knots and the initial and final position were recorded. In August 2018, the two trawl marks and four additional control transects (one on either side of the trawl mark) were surveyed while onboard the R/V G.O.Sars. Video recordings were taken along the trawl marks and control transects with the ROV AEGIR6000. Control transects were located 50 m to the east and west of each trawl mark and were performed parallel to the mark.
Keyword(s):
Deep sea; Sponges; trawl
Supplement to:
Morrison, Katelin M; Meyer, Heidi Kristina; Roberts, Emyr Martyn; Rapp, Hans Tore; Colaço, Ana; Pham, Christopher Kim (2020): The First Cut Is the Deepest: Trawl Effects on a Deep-Sea Sponge Ground Are Pronounced Four Years on. Frontiers in Marine Science, 7, https://doi.org/10.3389/fmars.2020.605281
Related to:
Morrison, Katelin M; Meyer, Heidi Kristina; Roberts, Emyr Martyn; Rapp, Hans Tore; Colaço, Ana; Pham, Christopher Kim (2021): Occurence of sponges and associated fauna on the Schultz Bank (Summit) during GO Sars cruise GS2018108 in 2018. PANGAEA, https://doi.org/10.1594/PANGAEA.927271
Funding:
Horizon 2020 (H2020), grant/award no. 679849: Deep-sea Sponge Grounds Ecosystems of the North Atlantic
Coverage:
Median Latitude: 73.814109 * Median Longitude: 7.438831 * South-bound Latitude: 73.812650 * West-bound Longitude: 7.434680 * North-bound Latitude: 73.815730 * East-bound Longitude: 7.442800
Date/Time Start: 2018-08-04T12:00:00 * Date/Time End: 2018-08-04T18:00:00
Minimum Elevation: -1100.0 m * Maximum Elevation: -1100.0 m
Event(s):
GS2018108-27-ROV-19 * Latitude Start: 73.815900 * Longitude Start: 7.443500 * Latitude End: 73.812600 * Longitude End: 7.434800 * Date/Time Start: 2018-08-04T12:00:00 * Date/Time End: 2018-08-04T18:00:00 * Elevation Start: -1100.0 m * Elevation End: -1100.0 m * Location: Schultz Bank * Campaign: GS2018108 * Basis: G. O. Sars (2003) * Method/Device: Remote operated vehicle (ROV) * Comment: Surveyed deep 2014 trawl mark and adjacent control lines: (1) high altitude Mbeam (2) low altitude for video annotation. In addition 2 boxcores (inside and outside mark)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1IdentificationIDMorrison, Katelin Msampling_unit_transect_area
2Swept areaSwept aream2Morrison, Katelin M
3Trawling distanceTrawl dismMorrison, Katelin M
4LONGITUDELongitudeMorrison, Katelin MGeocode – mean
5LATITUDELatitudeMorrison, Katelin MGeocode – mean
6Transect numberTransect noMorrison, Katelin M
7TreatmentTreatMorrison, Katelin M
8Individuals per areaInd a#/m2Morrison, Katelin Mall_taxa
9Actiniaria sp.Actiniaria sp.#/m2Morrison, Katelin MAnemone1
10Ascidiacea sp.Ascidiacea sp.#/m2Morrison, Katelin MAscidian
11Lycodes diapterusL. diapterus#/m2Morrison, Katelin Mblack eelpout
12Craniella infrequensC. infrequens#/m2Morrison, Katelin M
13CrinoideaCrinoidea#/m2Morrison, Katelin Mfeather star
14Geodia hentscheliG. hentscheli#/m2Morrison, Katelin M
15PedunculataPedunculata#/m2Morrison, Katelin MGooseneck barnacle
16Haliclona sp.Haliclona sp.#/m2Morrison, Katelin M
17Hexactinellida spp.Hexactinellida spp.#/m2Morrison, Katelin M
18Ascidiacea sp.Ascidiacea sp.#/m2Morrison, Katelin MJelly ascidian
19Demospongiae indeterminataDemospongiae indet#/m2Morrison, Katelin MLarge demosponge
20Lycopodina sp.Lycopodina sp.#/m2Morrison, Katelin M
21Demospongiae indeterminataDemospongiae indet#/m2Morrison, Katelin MMedium demosponge
22Nephrops norvegicusN. norvegicus#/m2Morrison, Katelin MNorway lobster
23Demospongiae indeterminataDemospongiae indet#/m2Morrison, Katelin MSmall demosponge
24Solaster sp.Solaster sp.#/m2Morrison, Katelin M
25Ascidiacea sp.Ascidiacea sp.#/m2Morrison, Katelin Mstar1
26Stylocordyla borealisS. borealis#/m2Morrison, Katelin M
27Umbellula sp.Umbellula sp.#/m2Morrison, Katelin M
28IndeterminataIndet#/m2Morrison, Katelin Mwhite blob
Size:
728 data points

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